High voltage switching device with calcium-aluminum glass filled resin insulator support

Claim 2

An electrical device comprising: A. a container, B. arc-prone electrical contacts within the container, C. an arc-resistant, dielectric halogenated gas within the container, D. a filled resin electrical insulator within the container in contact with the gas, said filled resin comprising: 1. a cured epoxy resin, 2. a filler of particles of calcium-aluminum glass wherein the glass is free of silicon, boron, and alkali metals.

Claim 3

An electrical device comprising: A. a container, B. arc-prone electrical contacts within the container, C. an arc-resistant, dielectric halogenated gas within the container, D. a filled resin electrical insulator within the container in contact with the gas, said filled resin comprising: 1. a cured epoxy resin, 2. a filler of particles of calcium-aluminum glass, a. wherein the glass is free of silicon, boron, and alkali metals, b. wherein the calcium aluminum plan contains between 25 and 75% by weight Al 2 O 3 and between 20 and 60% by weight CaO, c. wherein the calcium aluminum glass contains up to 30 weight percent of an oxide selected from the group consisting of BaO, SrO, MgO, BeO, ZnO, La 2 O 3 , Sb 2 O 3 , ZrO 2 , P 2 O 5 , Fe 2 O 3 , and TiO 2 .

Claim 4

An electrical device comprising: A. a container, B. arc-prone electrical contacts within the container, C. an arc-resistant, dielectric halogenated gas within the container, D. a filled resin electrical insulator within the container in contact with the gas, said filled resin comprising: 1. a cured epoxy resin, 2. a filler of particles of calcium-aluminum glass, a. wherein the glass is free of silicon, boron, and alkali metals, b. wherein the calcium aluminum plan contains between 25 and 75% by weight Al 2 O 3 and between 20 and 60% by weight CaO, c. wherein the calcium aluminum glass contains up to 30 weight percent of an oxide selected from the group consisting of BaO, SrO, MgO, BeO, ZnO, La 2 O 3 , Sb 2 O 3 , ZrO 2 , P 2 O 5 , Fe 2 O 3 , and TiO 2 .

Claim 5

The electrical device of claim 2 wherein the calcium aluminum glass contains between 35 and 60% by weight Al 2 O 3 and between 20 and 50% by weight CaO.

Claim 6

The electrical device of claim 2 wherein the particles are spherical in shape.

Claim 7

The electrical device of claim 2 wherein the the particles are of a spherical shape and have a size between 1 and 100 mircons.

Claim 8

The device of claim 2 wherein the halogenated gas is a gaseous fluorine-containing compound.

Claim 9

The device of claim 2 wherein the halogenated gas is sulfur hexafluoride.

Claim 10

An electrical device comprising: A. a gas-tight container, B. a plurality of arc-prone electrical contacts within the container, said contacts being provided with means for passing a current through the contacts while in contact with each other, C. an arc-resistant, dielectric halogenated gas within the container, said gas being sulfur hexafluoride, D. a filled resin electrical insulator within the container in contact with the gas, said insulator physically separating and electrically insulating the electrical contacts from the container, said resin comprising: 1. a cured epoxy resin comprising the reaction product of: a. 1,1'-bis(3,4 epoxyhexahydrophenyl)cyclohexane, b. hexahydrophthalic acid anhydride, 2. a filler of particles of calcium-aluminum glass, a. wherein the glass is free of SiO 2 , B 2 O 3 , and alkali oxides, b. wherein contains between 35 and 60% by weight Al 2 O 3 and between 20 and 50% by weight CaO. c. wherein the calcium aluminum glass contains 2 to 20 weight percent of an oxide selected from the group consisting of BaO, SrO, MgO, BeO, ZnO, La 2 O 3 , Sb 2 O 3 , ZrO 2 , P 2 O 5 , Fe 2 O 3 , and TiO 2 , d. wherein the particles are spherical in form and have a variety of sizes between 1 and 100 microns, e. wherein the weight ratio of epoxy resin to filler is between 2:1 and 1:5.

Claim 11

An electrical device comprising: A. a gas-tight container, B. a plurality of arc-prone electrical contacts within the container, said contacts being provided with means for passing a current through the contacts while in contact with each other, C. an arc-resistant, dielectric halogenated gas within the container, said gas being sulfur hexafluoride, D. a filled resin electrical insulator within the container in contact with the gas, said insulator physically separating and electrically insulating the electrical contacts from the container, said resin comprising: 1. a cured epoxy resin comprising the reaction product of: a. 1,1'-bis(3,4 epoxyhexahydrophenyl)cyclohexane, b. hexahydrophthalic acid anhydride, 2. a filler of particles of calcium-aluminum glass, a. wherein the glass is free of SiO 2 , B 2 O 3 , and alkali oxides, b. wherein contains between 35 and 60% by weight Al 2 O 3 and between 20 and 50% by weight CaO. c. wherein the calcium aluminum glass contains 2 to 20 weight percent of an oxide selected from the group consisting of BaO, SrO, MgO, BeO, ZnO, La 2 O 3 , Sb 2 O 3 , ZrO 2 , P 2 O 5 , Fe 2 O 3 , and TiO 2 , d. wherein the particles are spherical in form and have a variety of sizes between 1 and 100 microns, e. wherein the weight ratio of epoxy resin to filler is between 2:1 and 1:5.

Claim 12

A filled resin comprising: 1. a cured epoxy resin, 2. a filler of particles of calcium-aluminum glass wherein the glass is free of silicon, boron, and alkali metals.

Claim 13

A filled resin comprising: 1. a cured epoxy resin, 2. a filler of particles of calcium-aluminum glass wherein the glass is free of silicon, boron, and alkali metals.

Claim 14

A filled resin comprising: 1. a cured epoxy resin, 2. a filler of particles of calcium-aluminum glass a. wherein the glass is free of silicon, boron, and alkali metals, b. wherein contains between 25 and 75% by weight Al 2 O 3 and between 20 and 60% by weight CaO, c. wherein the calcium aluminum glass contains up to 30 weight percent of an oxide selected from the group consisting of BaO, SrO, MgO, BeO, ZnO, La 2 O 3 , Sb 2 O 3 , ZrO 2 , P 2 O 5 , Fe 2 O 3 , and TiO 2 .

Claim 15

A filled resin comprising: 1. a cured epoxy resin, 2. a filler of particles of calcium-aluminum glass a. wherein the glass is free of silicon, boron, and alkali metals, b. wherein contains between 25 and 75% by weight Al 2 O 3 and between 20 and 60% by weight CaO, c. wherein the calcium aluminum glass contains up to 30 weight percent of an oxide selected from the group consisting of BaO, SrO, MgO, BeO, ZnO, La 2 O 3 , Sb 2 O 3 , ZrO 2 , P 2 O 5 , Fe 2 O 3 , and TiO 2 .

Claim 16

A filled resin consisting essentially of: 1. a cured epoxy resin comprising the reaction product of: a. 1,1'-bis(3,4 epoxyhexahydrophenyl cyclohexane, b. hexahydrophthalic acid anhydride, 2. a filler of particles of calcium-aluminum glass, a. wherein the glass is free of SiO 2 , B 2 O 3 , and alkali oxides, b. wherein contains between 35 and 60% by weight Al 2 O 3 and between 20 and 50% by weight CaO, c. wherein the calcium aluminum glass contains 2 to 20 weight percent of an oxide selected from the group consisting of BaO, SrO, MgO, BeO, ZnO, La 2 O 3 , Sb 2 O 3 , ZrO 2 , P 2 O 5 , Fe 2 O 3 , and TiO 2 , d. wherein the particles are spherical in form and have a variety of sizes between 1 and 100 microns, e. wherein the weight ratio of epoxy resin to filler is between 2:1 and 1:5.

Claim 17

A filled resin consisting essentially of: 1. a cured epoxy resin comprising the reaction product of: a. 1,1'-bis(3,4 epoxyhexahydrophenyl cyclohexane, b. hexahydrophthalic acid anhydride, 2. a filler of particles of calcium-aluminum glass, a. wherein the glass is free of SiO 2 , B 2 O 3 , and alkali oxides, b. wherein contains between 35 and 60% by weight Al 2 O 3 and between 20 and 50% by weight CaO, c. wherein the calcium aluminum glass contains 2 to 20 weight percent of an oxide selected from the group consisting of BaO, SrO, MgO, BeO, ZnO, La 2 O 3 , Sb 2 O 3 , ZrO 2 , P 2 O 5 , Fe 2 O 3 , and TiO 2 , d. wherein the particles are spherical in form and have a variety of sizes between 1 and 100 microns, e. wherein the weight ratio of epoxy resin to filler is between 2:1 and 1:5.

Claim 18

An encased high-voltage switch gear having high voltage carrying metal switching members, a grounded metal sheathing surrounding said switching members and forming a sealed enclosure filled with insulating gas, insulating supports for securing said switching members within said sheathing wherein the material of said insulating support is a filled resin electrical insulator within the container in contact with the gas, said filled resin comprising: A. a cured epoxy resin, B. a filler of particles of calcium-aluminum glass wherein the glass is free of silicon, boron, and alkali metals.

Claim 19

An encased high-voltage switch gear having high voltage carrying metal switching members, a grounded metal sheathing surrounding said switching members and forming a sealed enclosure filled with insulating gas, insulating supports for securing said switching members within said sheathing wherein the material of said insulating support is a filled resin electrical insulator within the container in contact with the gas, said filled resin comprising: A. a cured epoxy resin, B. a filler of particles of calcium-aluminum glass wherein the glass is free of silicon, boron, and alkali metals.